Well, a little time has gone by since you were working on this, but I have a working G07.1 program. This is running in a Nexus QTN250MSY Turning Center.

I was thrown by the G07.1 not being included in the post from CNC Write, but once I broke out the book and read up on the Cyl Interpolation on how it wanted you to identify the Cylinder Radius and also how to Cancel the process via G07.1 C0, it started to come together.

I'm pretty psyched I'm actually going to use this on a customers production run for the first time since I purchased 2 or so years ago.

Here is a trunctated verision of my program. It was rather long so I'll just post the meat and potatoes. The part is 4.000 diameter 304SS.

Keep in mind this is not an Integrex so some of the M-Codes I added to the "Post" may be different.

O1099.1 (MP0101/D (3) ENGRAVE)

G40 G80

G53.5

G00 G97 G98

G30 U0 W0 V0

M200

T400.01

M203 S4500 M8

G00 X4.4 Z-4.6

G18

G07.1 C2.0

G00 C201.0905 Z-2.6700 X4.0400

G01 X3.9980 F10.00

G01 C199.7741 F25.00

G01 C199.3356 Z-2.6978

G01 Z-2.8092

G01 C199.7741 Z-2.8370

G01 C201.0905

G00 X4.0400

G01 C200.6519 F200.00

G01 X3.9980 F10.00

G00 X4.0400

G01 C161.8733 F200.00

G01 X3.9980 F10.00

G01 Z-2.3360 F25.00

G00 X4.0400

G01 C162.3119 F200.00

G01 X3.9980 F10.00

G01 C161.4345 F25.00

G00 X4.0400

G40

G07.1 C0 (Cancels)

M205

M202

G0G30U0W0V0

M99